20510025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 36753600

約数和(自身を除く): 16243575

約数列:

[1, 3, 5, 15, 19, 25, 37, 57, 75, 95, 111, 185, 285, 389, 475, 555, 703, 925, 1167, 1425, 1945, 2109, 2775, 3515, 5835, 7391, 9725, 10545, 14393, 17575, 22173, 29175, 36955, 43179, 52725, 71965, 110865, 184775, 215895, 273467, 359825, 554325, 820401, 1079475, 1367335, 4102005, 6836675, 20510025]

約数ペア:

[(1, 20510025), (3, 6836675), (5, 4102005), (15, 1367335), (19, 1079475), (25, 820401), (37, 554325), (57, 359825), (75, 273467), (95, 215895), (111, 184775), (185, 110865), (285, 71965), (389, 52725), (475, 43179), (555, 36955), (703, 29175), (925, 22173), (1167, 17575), (1425, 14393), (1945, 10545), (2109, 9725), (2775, 7391), (3515, 5835)]